I got a new iPhone 6 on Friday. After restoring my iPhone from my previous 4S backup the phone was working great with the exception of the data; text and phone calls were working fine. The strangest thing is that the phone says LTE or 4G if I turn the LTE off, but is not working. Today, after resetting my network settings, getting a new sim I still couldn't get it working. The only solution I've found was setting up my iPhone as new. Is this a common issue? Any insight would be gladly appreciated! I'm on AT&T.